WARNING! Hiking and outdoor related sports can be dangerous. Be responsible and prepare for the trip. Study the area you are entering and plan accordingly. Dress for the current and unexpected weather changes. Take plenty of water. Never go alone. Make an itinerary with your plan(s), route(s), destination(s) and expected return time. Give your itinerary to trusted family and/or friends.
To Cottonwood Camp Trailhead From Scottsdale follow Shea Blvd East to its terminus at SR87. Turn Left onto SR87. Follow SR87(this is the Beeline) to the Four Peaks Turnoff which is FR143. FR143 is well marked. Follow FR143 to FR 401. Hang a right onto FR401 and follow past Cottonwood Camp. Park anywhere, behind the corral is more concealed.
Several of the hikes posted from this trailhead go south. You can continue 0.5 miles south to where FR401 ascends out of Cottonwood Creek up the side of a mountain. It's absolute 4WD beyond. You will know as it turns from sand to cobblestone sized rocks. Getting here is only doable in high clearance, dry conditions and it's slightly risky depending on current conditions.
From PHX (I-10 & AZ-51) 46.4 mi - about 1 hour 20 mins From TUC (Jct 1-10 & Grant) 144 mi - about 2 hours 47 mins From FLG (Jct I-17 & I-40) 173 mi - about 3 hours 21 mins